首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   12838篇
  免费   312篇
  国内免费   3篇
财政金融   2214篇
工业经济   894篇
计划管理   2377篇
经济学   2744篇
综合类   237篇
运输经济   61篇
旅游经济   162篇
贸易经济   2516篇
农业经济   436篇
经济概况   1344篇
信息产业经济   1篇
邮电经济   167篇
  2021年   82篇
  2020年   157篇
  2019年   189篇
  2018年   349篇
  2017年   375篇
  2016年   370篇
  2015年   246篇
  2014年   326篇
  2013年   1229篇
  2012年   469篇
  2011年   411篇
  2010年   400篇
  2009年   408篇
  2008年   401篇
  2007年   336篇
  2006年   307篇
  2005年   300篇
  2004年   243篇
  2003年   255篇
  2002年   225篇
  2001年   263篇
  2000年   249篇
  1999年   200篇
  1998年   200篇
  1997年   226篇
  1996年   204篇
  1995年   203篇
  1994年   179篇
  1993年   199篇
  1992年   217篇
  1991年   202篇
  1990年   172篇
  1989年   169篇
  1988年   140篇
  1987年   142篇
  1986年   146篇
  1985年   205篇
  1984年   182篇
  1983年   193篇
  1982年   159篇
  1981年   187篇
  1980年   154篇
  1979年   170篇
  1978年   150篇
  1977年   133篇
  1976年   146篇
  1975年   124篇
  1974年   118篇
  1973年   101篇
  1972年   81篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
33.
Recent approaches to sustainable development leave much room for policies at a local level. In fact, it is becoming evident that targets such as increasing resource productivity, preserving natural cycles, or extending the present level of welfare, are best pursued within the confines of a local area. In particular, environmental changes are best brought about by considering local systems of firms as cornerstones of cooperative strategies and using data on materials and energy use in physical terms. In this paper, an enterprise input–output model is developed for an industrial district, i.e. a local group of firms specialized in the production of a single final output. The model allows for a detailed quantitative analysis of materials and energy flows and the consequent generation of waste and pollution. As a planning tool, the model may be used to evaluate alternative scenarios, such as the possibility of re- using waste taking account of sustainability requirements. An empirical case study applies the model to an industrial district in Southern Italy producing leather sofas.  相似文献   
34.
Book Reviews     
Rolf Kühne 《Metrika》2003,57(3):314-316
  相似文献   
35.
This paper examines the comments submitted by UK companies on 20 proposed accounting standards to test the hypotheses that executives favor standards that increase, or dampen the variance of, accounting profit numbers on which their incentive remuneration is based. Test results were generally as hypothesised but only the profit variance outcomes were statistically significant. Allowing for political environment changes affected only the profit variance results. There was no evidence that the relative monetary size of bonus payments was a significant lobbying factor. No significant differences were found between the lobbying preferences of companies with or without executive incentive schemes.  相似文献   
36.
37.
This paper introduces a simple, yet rich, measure of efficiency changes based on the revenue-generating-ability (RGA) principle. Using this principle, we explain the connections between efficiency changes and the variables, such as pretax profits, interest expense, non-interest expense, profit margins, loan loss provision, and asset quality. These connections are used to explain earnings differences between small and large commercial banks.  相似文献   
38.
Spreads, depths, and the impact of earnings information: an intraday analysis   总被引:19,自引:0,他引:19  
For a sample of NYSE firms, we show that wide spreads are accompaniedby low depths, and that spreads widen and depths fall in responseto bigger volume. Spreads widen and depths fall in anticipationof earnings announcements; these effects are more pronouncedfor announcements with larger subsequent price changes. Spreadsare also wider following earnings announcements, but this effectdissipates quickly after controlling for volume. Collectively,our results suggest liquidity providers are sensitive to changesin information asymmetry risk and use both spreads and depthsto actively manage this risk.  相似文献   
39.
This study shows that firms in the pharmaceutical industry experience decreasing returns to scale in R & D as the level of R & D expenditures rises. The paper presents the results of our study of the innovative output of 16 pharmaceutical firms over a 19 year period. Given the strong correlation between R & D budgets and firm size, our study suggests the wave of mergers in the industry may yield less innovative productivity than managers expect.  相似文献   
40.
Kamstra et al. [Kamstra, M.J., Kramer, L.A., Levi, M.D., 2000. Losing sleep at the market: the daylight saving anomaly. The American Economic Review 90, 1005–1011] argue that the mean weekend return following the changes in daylight saving time is less than the mean weekend return throughout the rest of the year. Opposing studies, such as Pinegar [Pinegar, J.M., 2002. Losing sleep at the market: comment. The American Economic Review 92, 1251–1256), reason that the observed results depend upon methodology. We extend the ongoing discussions by providing further evidence for equity markets and bond markets in Germany and across Europe. We further demonstrate that the daylight saving effect does not serve as a potential rationale for the weekend effect.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号